git.oblomov.eu Git - wine/blob - dlls/quartz/pin.c

   1 /*
   2  * Generic Implementation of IPin Interface
   3  *
   4  * Copyright 2003 Robert Shearman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "quartz_private.h"
  22 #include "pin.h"
  23
  24 #include "wine/debug.h"
  25 #include "wine/unicode.h"
  26 #include "uuids.h"
  27 #include "vfwmsgs.h"
  28 #include <assert.h>
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  31
  32 static const struct IPinVtbl InputPin_Vtbl;
  33 static const struct IPinVtbl OutputPin_Vtbl;
  34 static const struct IMemInputPinVtbl MemInputPin_Vtbl;
  35 static const struct IPinVtbl PullPin_Vtbl;
  36
  37 #define ALIGNDOWN(value,boundary) ((value) & ~(boundary-1))
  38 #define ALIGNUP(value,boundary) (ALIGNDOWN(value - 1, boundary) + boundary)
  39
  40 #define _IMemInputPin_Offset ((int)(&(((InputPin*)0)->lpVtblMemInput)))
  41 #define ICOM_THIS_From_IMemInputPin(impl, iface) impl* This = (impl*)(((char*)iface)-_IMemInputPin_Offset);
  42
  43 static void Copy_PinInfo(PIN_INFO * pDest, const PIN_INFO * pSrc)
  44 {
  45     /* Tempting to just do a memcpy, but the name field is
  46        128 characters long! We will probably never exceed 10
  47        most of the time, so we are better off copying
  48        each field manually */
  49     strcpyW(pDest->achName, pSrc->achName);
  50     pDest->dir = pSrc->dir;
  51     pDest->pFilter = pSrc->pFilter;
  52     IBaseFilter_AddRef(pDest->pFilter);
  53 }
  54
  55 /* Internal function called as a helper to IPin_Connect */
  56 /* specific AM_MEDIA_TYPE - it cannot be NULL */
  57 /* NOTE: not part of standard interface */
  58 static HRESULT OutputPin_ConnectSpecific(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
  59 {
  60     ICOM_THIS(OutputPin, iface);
  61     HRESULT hr;
  62     IMemAllocator * pMemAlloc = NULL;
  63     ALLOCATOR_PROPERTIES actual; /* FIXME: should we put the actual props back in to This? */
  64
  65     TRACE("(%p, %p)\n", pReceivePin, pmt);
  66     dump_AM_MEDIA_TYPE(pmt);
  67
  68     /* FIXME: call queryacceptproc */
  69
  70     This->pin.pConnectedTo = pReceivePin;
  71     IPin_AddRef(pReceivePin);
  72     CopyMediaType(&This->pin.mtCurrent, pmt);
  73
  74     hr = IPin_ReceiveConnection(pReceivePin, iface, pmt);
  75
  76     /* get the IMemInputPin interface we will use to deliver samples to the
  77      * connected pin */
  78     if (SUCCEEDED(hr))
  79     {
  80         hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin);
  81
  82         if (SUCCEEDED(hr))
  83             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pMemAlloc);
  84
  85         if (SUCCEEDED(hr))
  86             hr = IMemAllocator_SetProperties(pMemAlloc, &This->allocProps, &actual);
  87
  88         if (pMemAlloc)
  89             IMemAllocator_Release(pMemAlloc);
  90
  91         /* break connection if we couldn't get the allocator */
  92         if (FAILED(hr))
  93             IPin_Disconnect(pReceivePin);
  94     }
  95
  96     if (FAILED(hr))
  97     {
  98         IPin_Release(This->pin.pConnectedTo);
  99         This->pin.pConnectedTo = NULL;
 100         DeleteMediaType(&This->pin.mtCurrent);
 101     }
 102
 103     TRACE(" -- %lx\n", hr);
 104     return hr;
 105 }
 106
 107 HRESULT InputPin_Construct(const PIN_INFO * pPinInfo, SAMPLEPROC pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 108 {
 109     InputPin * pPinImpl;
 110
 111     *ppPin = NULL;
 112
 113     if (pPinInfo->dir != PINDIR_INPUT)
 114     {
 115         ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir);
 116         return E_INVALIDARG;
 117     }
 118
 119     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
 120
 121     if (!pPinImpl)
 122         return E_OUTOFMEMORY;
 123
 124     if (SUCCEEDED(InputPin_Init(pPinInfo, pSampleProc, pUserData, pQueryAccept, pCritSec, pPinImpl)))
 125     {
 126         pPinImpl->pin.lpVtbl = &InputPin_Vtbl;
 127         pPinImpl->lpVtblMemInput = &MemInputPin_Vtbl;
 128
 129         *ppPin = (IPin *)(&pPinImpl->pin.lpVtbl);
 130         return S_OK;
 131     }
 132     return E_FAIL;
 133 }
 134
 135 /* Note that we don't init the vtables here (like C++ constructor) */
 136 HRESULT InputPin_Init(const PIN_INFO * pPinInfo, SAMPLEPROC pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, InputPin * pPinImpl)
 137 {
 138     TRACE("\n");
 139
 140     /* Common attributes */
 141     pPinImpl->pin.refCount = 1;
 142     pPinImpl->pin.pConnectedTo = NULL;
 143     pPinImpl->pin.fnQueryAccept = pQueryAccept;
 144     pPinImpl->pin.pUserData = pUserData;
 145     pPinImpl->pin.pCritSec = pCritSec;
 146     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
 147
 148     /* Input pin attributes */
 149     pPinImpl->fnSampleProc = pSampleProc;
 150     pPinImpl->pAllocator = NULL;
 151     pPinImpl->tStart = 0;
 152     pPinImpl->tStop = 0;
 153     pPinImpl->dRate = 0;
 154
 155     return S_OK;
 156 }
 157
 158 HRESULT OutputPin_Init(const PIN_INFO * pPinInfo, ALLOCATOR_PROPERTIES * props, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, OutputPin * pPinImpl)
 159 {
 160     TRACE("\n");
 161
 162     /* Common attributes */
 163     pPinImpl->pin.lpVtbl = &OutputPin_Vtbl;
 164     pPinImpl->pin.refCount = 1;
 165     pPinImpl->pin.pConnectedTo = NULL;
 166     pPinImpl->pin.fnQueryAccept = pQueryAccept;
 167     pPinImpl->pin.pUserData = pUserData;
 168     pPinImpl->pin.pCritSec = pCritSec;
 169     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
 170
 171     /* Output pin attributes */
 172     pPinImpl->pMemInputPin = NULL;
 173     pPinImpl->pConnectSpecific = OutputPin_ConnectSpecific;
 174     if (props)
 175     {
 176         memcpy(&pPinImpl->allocProps, props, sizeof(pPinImpl->allocProps));
 177         if (pPinImpl->allocProps.cbAlign == 0)
 178             pPinImpl->allocProps.cbAlign = 1;
 179     }
 180     else
 181         ZeroMemory(&pPinImpl->allocProps, sizeof(pPinImpl->allocProps));
 182
 183
 184     return S_OK;
 185 }
 186
 187 HRESULT OutputPin_Construct(const PIN_INFO * pPinInfo, ALLOCATOR_PROPERTIES *props, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 188 {
 189     OutputPin * pPinImpl;
 190
 191     *ppPin = NULL;
 192
 193     if (pPinInfo->dir != PINDIR_OUTPUT)
 194     {
 195         ERR("Pin direction(%x) != PINDIR_OUTPUT\n", pPinInfo->dir);
 196         return E_INVALIDARG;
 197     }
 198
 199     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
 200
 201     if (!pPinImpl)
 202         return E_OUTOFMEMORY;
 203
 204     if (SUCCEEDED(OutputPin_Init(pPinInfo, props, pUserData, pQueryAccept, pCritSec, pPinImpl)))
 205     {
 206         pPinImpl->pin.lpVtbl = &OutputPin_Vtbl;
 207
 208         *ppPin = (IPin *)(&pPinImpl->pin.lpVtbl);
 209         return S_OK;
 210     }
 211     return E_FAIL;
 212 }
 213
 214 /*** Common pin functions ***/
 215
 216 ULONG WINAPI IPinImpl_AddRef(IPin * iface)
 217 {
 218     ICOM_THIS(IPinImpl, iface);
 219
 220     TRACE("()\n");
 221
 222     return InterlockedIncrement(&This->refCount);
 223 }
 224
 225 HRESULT WINAPI IPinImpl_Disconnect(IPin * iface)
 226 {
 227     HRESULT hr;
 228     ICOM_THIS(IPinImpl, iface);
 229
 230     TRACE("()\n");
 231
 232     EnterCriticalSection(This->pCritSec);
 233     {
 234         if (This->pConnectedTo)
 235         {
 236             IPin_Release(This->pConnectedTo);
 237             This->pConnectedTo = NULL;
 238             hr = S_OK;
 239         }
 240         else
 241             hr = S_FALSE;
 242     }
 243     LeaveCriticalSection(This->pCritSec);
 244
 245     return hr;
 246 }
 247
 248 HRESULT WINAPI IPinImpl_ConnectedTo(IPin * iface, IPin ** ppPin)
 249 {
 250     ICOM_THIS(IPinImpl, iface);
 251
 252 /*  TRACE("(%p)\n", ppPin);*/
 253
 254     *ppPin = This->pConnectedTo;
 255
 256     if (*ppPin)
 257     {
 258         IPin_AddRef(*ppPin);
 259         return S_OK;
 260     }
 261     else
 262         return VFW_E_NOT_CONNECTED;
 263 }
 264
 265 HRESULT WINAPI IPinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt)
 266 {
 267     HRESULT hr;
 268     ICOM_THIS(IPinImpl, iface);
 269
 270     TRACE("(%p)\n", pmt);
 271
 272     EnterCriticalSection(This->pCritSec);
 273     {
 274         if (This->pConnectedTo)
 275         {
 276             CopyMediaType(pmt, &This->mtCurrent);
 277             hr = S_OK;
 278         }
 279         else
 280         {
 281             ZeroMemory(pmt, sizeof(*pmt));
 282             hr = VFW_E_NOT_CONNECTED;
 283         }
 284     }
 285     LeaveCriticalSection(This->pCritSec);
 286
 287     return hr;
 288 }
 289
 290 HRESULT WINAPI IPinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo)
 291 {
 292     ICOM_THIS(IPinImpl, iface);
 293
 294     TRACE("(%p)\n", pInfo);
 295
 296     Copy_PinInfo(pInfo, &This->pinInfo);
 297
 298     return S_OK;
 299 }
 300
 301 HRESULT WINAPI IPinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir)
 302 {
 303     ICOM_THIS(IPinImpl, iface);
 304
 305     TRACE("(%p)\n", pPinDir);
 306
 307     *pPinDir = This->pinInfo.dir;
 308
 309     return S_OK;
 310 }
 311
 312 HRESULT WINAPI IPinImpl_QueryId(IPin * iface, LPWSTR * Id)
 313 {
 314     ICOM_THIS(IPinImpl, iface);
 315
 316     TRACE("(%p)\n", Id);
 317
 318     *Id = CoTaskMemAlloc((strlenW(This->pinInfo.achName) + 1) * sizeof(WCHAR));
 319     if (!Id)
 320         return E_OUTOFMEMORY;
 321
 322     strcpyW(*Id, This->pinInfo.achName);
 323
 324     return S_OK;
 325 }
 326
 327 HRESULT WINAPI IPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 328 {
 329     ICOM_THIS(IPinImpl, iface);
 330
 331     TRACE("(%p)\n", pmt);
 332
 333     return (This->fnQueryAccept(This->pUserData, pmt) == S_OK ? S_OK : S_FALSE);
 334 }
 335
 336 HRESULT WINAPI IPinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 337 {
 338     ENUMMEDIADETAILS emd;
 339
 340     TRACE("(%p)\n", ppEnum);
 341
 342     /* override this method to allow enumeration of your types */
 343     emd.cMediaTypes = 0;
 344     emd.pMediaTypes = NULL;
 345
 346     return IEnumMediaTypesImpl_Construct(&emd, ppEnum);
 347 }
 348
 349 HRESULT WINAPI IPinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin)
 350 {
 351     TRACE("(%p, %p)\n", apPin, cPin);
 352
 353     return E_NOTIMPL; /* to tell caller that all input pins connected to all output pins */
 354 }
 355
 356 /*** IPin implementation for an input pin ***/
 357
 358 HRESULT WINAPI InputPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 359 {
 360     ICOM_THIS(InputPin, iface);
 361
 362     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 363
 364     *ppv = NULL;
 365
 366     if (IsEqualIID(riid, &IID_IUnknown))
 367         *ppv = (LPVOID)iface;
 368     else if (IsEqualIID(riid, &IID_IPin))
 369         *ppv = (LPVOID)iface;
 370     else if (IsEqualIID(riid, &IID_IMemInputPin))
 371         *ppv = (LPVOID)&This->lpVtblMemInput;
 372
 373     if (*ppv)
 374     {
 375         IUnknown_AddRef((IUnknown *)(*ppv));
 376         return S_OK;
 377     }
 378
 379     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 380
 381     return E_NOINTERFACE;
 382 }
 383
 384 ULONG WINAPI InputPin_Release(IPin * iface)
 385 {
 386     ICOM_THIS(InputPin, iface);
 387
 388     TRACE("()\n");
 389
 390     if (!InterlockedDecrement(&This->pin.refCount))
 391     {
 392         DeleteMediaType(&This->pin.mtCurrent);
 393         if (This->pAllocator)
 394             IMemAllocator_Release(This->pAllocator);
 395         CoTaskMemFree(This);
 396         return 0;
 397     }
 398     else
 399         return This->pin.refCount;
 400 }
 401
 402 HRESULT WINAPI InputPin_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt)
 403 {
 404     ERR("Outgoing connection on an input pin! (%p, %p)\n", pConnector, pmt);
 405
 406     return E_UNEXPECTED;
 407 }
 408
 409
 410 HRESULT WINAPI InputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 411 {
 412     ICOM_THIS(InputPin, iface);
 413     PIN_DIRECTION pindirReceive;
 414     HRESULT hr = S_OK;
 415
 416     TRACE("(%p, %p)\n", pReceivePin, pmt);
 417     dump_AM_MEDIA_TYPE(pmt);
 418
 419     EnterCriticalSection(This->pin.pCritSec);
 420     {
 421         if (This->pin.pConnectedTo)
 422             hr = VFW_E_ALREADY_CONNECTED;
 423
 424         if (SUCCEEDED(hr) && This->pin.fnQueryAccept(This->pin.pUserData, pmt) != S_OK)
 425             hr = VFW_E_TYPE_NOT_ACCEPTED; /* FIXME: shouldn't we just map common errors onto
 426                                            * VFW_E_TYPE_NOT_ACCEPTED and pass the value on otherwise? */
 427
 428         if (SUCCEEDED(hr))
 429         {
 430             IPin_QueryDirection(pReceivePin, &pindirReceive);
 431
 432             if (pindirReceive != PINDIR_OUTPUT)
 433             {
 434                 ERR("Can't connect from non-output pin\n");
 435                 hr = VFW_E_INVALID_DIRECTION;
 436             }
 437         }
 438
 439         if (SUCCEEDED(hr))
 440         {
 441             CopyMediaType(&This->pin.mtCurrent, pmt);
 442             This->pin.pConnectedTo = pReceivePin;
 443             IPin_AddRef(pReceivePin);
 444         }
 445     }
 446     LeaveCriticalSection(This->pin.pCritSec);
 447
 448     return hr;
 449 }
 450
 451 HRESULT WINAPI InputPin_EndOfStream(IPin * iface)
 452 {
 453     TRACE("()\n");
 454
 455     return S_OK;
 456 }
 457
 458 HRESULT WINAPI InputPin_BeginFlush(IPin * iface)
 459 {
 460     FIXME("()\n");
 461     return E_NOTIMPL;
 462 }
 463
 464 HRESULT WINAPI InputPin_EndFlush(IPin * iface)
 465 {
 466     FIXME("()\n");
 467     return E_NOTIMPL;
 468 }
 469
 470 HRESULT WINAPI InputPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 471 {
 472     ICOM_THIS(InputPin, iface);
 473
 474     TRACE("(%lx%08lx, %lx%08lx, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
 475
 476     This->tStart = tStart;
 477     This->tStop = tStop;
 478     This->dRate = dRate;
 479
 480     return S_OK;
 481 }
 482
 483 static const IPinVtbl InputPin_Vtbl =
 484 {
 485     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 486     InputPin_QueryInterface,
 487     IPinImpl_AddRef,
 488     InputPin_Release,
 489     InputPin_Connect,
 490     InputPin_ReceiveConnection,
 491     IPinImpl_Disconnect,
 492     IPinImpl_ConnectedTo,
 493     IPinImpl_ConnectionMediaType,
 494     IPinImpl_QueryPinInfo,
 495     IPinImpl_QueryDirection,
 496     IPinImpl_QueryId,
 497     IPinImpl_QueryAccept,
 498     IPinImpl_EnumMediaTypes,
 499     IPinImpl_QueryInternalConnections,
 500     InputPin_EndOfStream,
 501     InputPin_BeginFlush,
 502     InputPin_EndFlush,
 503     InputPin_NewSegment
 504 };
 505
 506 /*** IMemInputPin implementation ***/
 507
 508 HRESULT WINAPI MemInputPin_QueryInterface(IMemInputPin * iface, REFIID riid, LPVOID * ppv)
 509 {
 510     ICOM_THIS_From_IMemInputPin(InputPin, iface);
 511
 512     return IPin_QueryInterface((IPin *)&This->pin, riid, ppv);
 513 }
 514
 515 ULONG WINAPI MemInputPin_AddRef(IMemInputPin * iface)
 516 {
 517     ICOM_THIS_From_IMemInputPin(InputPin, iface);
 518
 519     return IPin_AddRef((IPin *)&This->pin);
 520 }
 521
 522 ULONG WINAPI MemInputPin_Release(IMemInputPin * iface)
 523 {
 524     ICOM_THIS_From_IMemInputPin(InputPin, iface);
 525
 526     return IPin_Release((IPin *)&This->pin);
 527 }
 528
 529 HRESULT WINAPI MemInputPin_GetAllocator(IMemInputPin * iface, IMemAllocator ** ppAllocator)
 530 {
 531     ICOM_THIS_From_IMemInputPin(InputPin, iface);
 532
 533     TRACE("MemInputPin_GetAllocator()\n");
 534
 535     *ppAllocator = This->pAllocator;
 536     if (*ppAllocator)
 537         IMemAllocator_AddRef(*ppAllocator);
 538
 539     return *ppAllocator ? S_OK : VFW_E_NO_ALLOCATOR;
 540 }
 541
 542 HRESULT WINAPI MemInputPin_NotifyAllocator(IMemInputPin * iface, IMemAllocator * pAllocator, BOOL bReadOnly)
 543 {
 544     ICOM_THIS_From_IMemInputPin(InputPin, iface);
 545
 546     TRACE("()\n");
 547
 548     if (This->pAllocator)
 549         IMemAllocator_Release(This->pAllocator);
 550     This->pAllocator = pAllocator;
 551     if (This->pAllocator)
 552         IMemAllocator_AddRef(This->pAllocator);
 553
 554     return S_OK;
 555 }
 556
 557 HRESULT WINAPI MemInputPin_GetAllocatorRequirements(IMemInputPin * iface, ALLOCATOR_PROPERTIES * pProps)
 558 {
 559     TRACE("(%p)\n", pProps);
 560
 561     /* override this method if you have any specific requirements */
 562
 563     return E_NOTIMPL;
 564 }
 565
 566 HRESULT WINAPI MemInputPin_Receive(IMemInputPin * iface, IMediaSample * pSample)
 567 {
 568     ICOM_THIS_From_IMemInputPin(InputPin, iface);
 569
 570     /* this trace commented out for performance reasons */
 571 /*  TRACE("(%p)\n", pSample);*/
 572
 573     return This->fnSampleProc(This->pin.pUserData, pSample);
 574 }
 575
 576 HRESULT WINAPI MemInputPin_ReceiveMultiple(IMemInputPin * iface, IMediaSample ** pSamples, long nSamples, long *nSamplesProcessed)
 577 {
 578     HRESULT hr = S_OK;
 579     TRACE("(%p, %ld, %p)\n", pSamples, nSamples, nSamplesProcessed);
 580
 581     for (*nSamplesProcessed = 0; *nSamplesProcessed < nSamples; (*nSamplesProcessed)++)
 582     {
 583         hr = IMemInputPin_Receive(iface, pSamples[*nSamplesProcessed]);
 584         if (hr != S_OK)
 585             break;
 586     }
 587
 588     return hr;
 589 }
 590
 591 HRESULT WINAPI MemInputPin_ReceiveCanBlock(IMemInputPin * iface)
 592 {
 593     FIXME("()\n");
 594
 595     /* FIXME: we should check whether any output pins will block */
 596
 597     return S_OK;
 598 }
 599
 600 static const IMemInputPinVtbl MemInputPin_Vtbl =
 601 {
 602     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 603     MemInputPin_QueryInterface,
 604     MemInputPin_AddRef,
 605     MemInputPin_Release,
 606     MemInputPin_GetAllocator,
 607     MemInputPin_NotifyAllocator,
 608     MemInputPin_GetAllocatorRequirements,
 609     MemInputPin_Receive,
 610     MemInputPin_ReceiveMultiple,
 611     MemInputPin_ReceiveCanBlock
 612 };
 613
 614 HRESULT WINAPI OutputPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 615 {
 616     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 617
 618     *ppv = NULL;
 619
 620     if (IsEqualIID(riid, &IID_IUnknown))
 621         *ppv = (LPVOID)iface;
 622     else if (IsEqualIID(riid, &IID_IPin))
 623         *ppv = (LPVOID)iface;
 624
 625     if (*ppv)
 626     {
 627         IUnknown_AddRef((IUnknown *)(*ppv));
 628         return S_OK;
 629     }
 630
 631     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 632
 633     return E_NOINTERFACE;
 634 }
 635
 636 ULONG WINAPI OutputPin_Release(IPin * iface)
 637 {
 638     ICOM_THIS(OutputPin, iface);
 639
 640     TRACE("()\n");
 641
 642     if (!InterlockedDecrement(&This->pin.refCount))
 643     {
 644         DeleteMediaType(&This->pin.mtCurrent);
 645         CoTaskMemFree(This);
 646         return 0;
 647     }
 648     return This->pin.refCount;
 649 }
 650
 651 HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 652 {
 653     HRESULT hr;
 654     ICOM_THIS(OutputPin, iface);
 655
 656     TRACE("(%p, %p)\n", pReceivePin, pmt);
 657     dump_AM_MEDIA_TYPE(pmt);
 658
 659     /* If we try to connect to ourself, we will definitely deadlock.
 660      * There are other cases where we could deadlock too, but this
 661      * catches the obvious case */
 662     assert(pReceivePin != iface);
 663
 664     EnterCriticalSection(This->pin.pCritSec);
 665     {
 666         /* if we have been a specific type to connect with, then we can either connect
 667          * with that or fail. We cannot choose different AM_MEDIA_TYPE */
 668         if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL))
 669             hr = This->pConnectSpecific(iface, pReceivePin, pmt);
 670         else
 671         {
 672             /* negotiate media type */
 673
 674             IEnumMediaTypes * pEnumCandidates;
 675             AM_MEDIA_TYPE * pmtCandidate; /* Candidate media type */
 676
 677             if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates)))
 678             {
 679                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 680
 681                 /* try this filter's media types first */
 682                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 683                 {
 684                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 685                         (This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
 686                     {
 687                         hr = S_OK;
 688                         CoTaskMemFree(pmtCandidate);
 689                         break;
 690                     }
 691                     CoTaskMemFree(pmtCandidate);
 692                 }
 693                 IEnumMediaTypes_Release(pEnumCandidates);
 694             }
 695
 696             /* then try receiver filter's media types */
 697             if (hr != S_OK && SUCCEEDED(hr = IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */
 698             {
 699                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 700                 {
 701                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 702                         (This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
 703                     {
 704                         hr = S_OK;
 705                         CoTaskMemFree(pmtCandidate);
 706                         break;
 707                     }
 708                     CoTaskMemFree(pmtCandidate);
 709                 } /* while */
 710                 IEnumMediaTypes_Release(pEnumCandidates);
 711             } /* if not found */
 712         } /* if negotiate media type */
 713     } /* if succeeded */
 714     LeaveCriticalSection(This->pin.pCritSec);
 715
 716     FIXME(" -- %lx\n", hr);
 717     return hr;
 718 }
 719
 720 HRESULT WINAPI OutputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 721 {
 722     ERR("Incoming connection on an output pin! (%p, %p)\n", pReceivePin, pmt);
 723
 724     return E_UNEXPECTED;
 725 }
 726
 727 HRESULT WINAPI OutputPin_Disconnect(IPin * iface)
 728 {
 729     HRESULT hr;
 730     ICOM_THIS(OutputPin, iface);
 731
 732     TRACE("()\n");
 733
 734     EnterCriticalSection(This->pin.pCritSec);
 735     {
 736         if (This->pMemInputPin)
 737         {
 738             IMemInputPin_Release(This->pMemInputPin);
 739             This->pMemInputPin = NULL;
 740         }
 741         if (This->pin.pConnectedTo)
 742         {
 743             IPin_Release(This->pin.pConnectedTo);
 744             This->pin.pConnectedTo = NULL;
 745             hr = S_OK;
 746         }
 747         else
 748             hr = S_FALSE;
 749     }
 750     LeaveCriticalSection(This->pin.pCritSec);
 751
 752     return hr;
 753 }
 754
 755 HRESULT WINAPI OutputPin_EndOfStream(IPin * iface)
 756 {
 757     TRACE("()\n");
 758
 759     /* not supposed to do anything in an output pin */
 760
 761     return E_UNEXPECTED;
 762 }
 763
 764 HRESULT WINAPI OutputPin_BeginFlush(IPin * iface)
 765 {
 766     TRACE("()\n");
 767
 768     /* not supposed to do anything in an output pin */
 769
 770     return E_UNEXPECTED;
 771 }
 772
 773 HRESULT WINAPI OutputPin_EndFlush(IPin * iface)
 774 {
 775     TRACE("()\n");
 776
 777     /* not supposed to do anything in an output pin */
 778
 779     return E_UNEXPECTED;
 780 }
 781
 782 HRESULT WINAPI OutputPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 783 {
 784     TRACE("(%lx%08lx, %lx%08lx, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
 785
 786     /* not supposed to do anything in an output pin */
 787
 788     return E_UNEXPECTED;
 789 }
 790
 791 static const IPinVtbl OutputPin_Vtbl =
 792 {
 793     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 794     OutputPin_QueryInterface,
 795     IPinImpl_AddRef,
 796     OutputPin_Release,
 797     OutputPin_Connect,
 798     OutputPin_ReceiveConnection,
 799     OutputPin_Disconnect,
 800     IPinImpl_ConnectedTo,
 801     IPinImpl_ConnectionMediaType,
 802     IPinImpl_QueryPinInfo,
 803     IPinImpl_QueryDirection,
 804     IPinImpl_QueryId,
 805     IPinImpl_QueryAccept,
 806     IPinImpl_EnumMediaTypes,
 807     IPinImpl_QueryInternalConnections,
 808     OutputPin_EndOfStream,
 809     OutputPin_BeginFlush,
 810     OutputPin_EndFlush,
 811     OutputPin_NewSegment
 812 };
 813
 814 HRESULT OutputPin_GetDeliveryBuffer(OutputPin * This, IMediaSample ** ppSample, const REFERENCE_TIME * tStart, const REFERENCE_TIME * tStop, DWORD dwFlags)
 815 {
 816     HRESULT hr;
 817
 818     TRACE("(%p, %p, %p, %lx)\n", ppSample, tStart, tStop, dwFlags);
 819
 820     EnterCriticalSection(This->pin.pCritSec);
 821     {
 822         if (!This->pin.pConnectedTo)
 823             hr = VFW_E_NOT_CONNECTED;
 824         else
 825         {
 826             IMemInputPin * pMemInputPin = NULL;
 827             IMemAllocator * pAlloc = NULL;
 828
 829             /* FIXME: should we cache this? */
 830             hr = IPin_QueryInterface(This->pin.pConnectedTo, &IID_IMemInputPin, (LPVOID *)&pMemInputPin);
 831
 832             if (SUCCEEDED(hr))
 833                 hr = IMemInputPin_GetAllocator(pMemInputPin, &pAlloc);
 834
 835             if (SUCCEEDED(hr))
 836                 hr = IMemAllocator_GetBuffer(pAlloc, ppSample, (REFERENCE_TIME *)tStart, (REFERENCE_TIME *)tStop, dwFlags);
 837
 838             if (SUCCEEDED(hr))
 839                 hr = IMediaSample_SetTime(*ppSample, (REFERENCE_TIME *)tStart, (REFERENCE_TIME *)tStop);
 840
 841             if (pAlloc)
 842                 IMemAllocator_Release(pAlloc);
 843             if (pMemInputPin)
 844                 IMemInputPin_Release(pMemInputPin);
 845         }
 846     }
 847     LeaveCriticalSection(This->pin.pCritSec);
 848
 849     return hr;
 850 }
 851
 852 HRESULT OutputPin_SendSample(OutputPin * This, IMediaSample * pSample)
 853 {
 854     HRESULT hr;
 855     IMemInputPin * pMemConnected = NULL;
 856
 857     EnterCriticalSection(This->pin.pCritSec);
 858     {
 859         if (!This->pin.pConnectedTo)
 860             hr = VFW_E_NOT_CONNECTED;
 861         else
 862         {
 863             /* FIXME: should we cache this? - if we do, then we need to keep the local version
 864              * and AddRef here instead */
 865             hr = IPin_QueryInterface(This->pin.pConnectedTo, &IID_IMemInputPin, (LPVOID *)&pMemConnected);
 866         }
 867     }
 868     LeaveCriticalSection(This->pin.pCritSec);
 869
 870     if (SUCCEEDED(hr) && pMemConnected)
 871     {
 872         /* NOTE: if we are in a critical section when Receive is called
 873          * then it causes some problems (most notably with the native Video
 874          * Renderer) if we are re-entered for whatever reason */
 875         hr = IMemInputPin_Receive(pMemConnected, pSample);
 876         IMemInputPin_Release(pMemConnected);
 877     }
 878
 879     return hr;
 880 }
 881
 882 HRESULT OutputPin_DeliverNewSegment(OutputPin * This, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 883 {
 884     HRESULT hr;
 885
 886     EnterCriticalSection(This->pin.pCritSec);
 887     {
 888         if (!This->pin.pConnectedTo)
 889             hr = VFW_E_NOT_CONNECTED;
 890         else
 891             hr = IPin_NewSegment(This->pin.pConnectedTo, tStart, tStop, dRate);
 892     }
 893     LeaveCriticalSection(This->pin.pCritSec);
 894
 895     return hr;
 896 }
 897
 898 HRESULT OutputPin_CommitAllocator(OutputPin * This)
 899 {
 900     HRESULT hr;
 901
 902     TRACE("()\n");
 903
 904     EnterCriticalSection(This->pin.pCritSec);
 905     {
 906         if (!This->pin.pConnectedTo)
 907             hr = VFW_E_NOT_CONNECTED;
 908         else
 909         {
 910             IMemInputPin * pMemInputPin = NULL;
 911             IMemAllocator * pAlloc = NULL;
 912             /* FIXME: should we cache this? */
 913             hr = IPin_QueryInterface(This->pin.pConnectedTo, &IID_IMemInputPin, (LPVOID *)&pMemInputPin);
 914
 915             if (SUCCEEDED(hr))
 916                 hr = IMemInputPin_GetAllocator(pMemInputPin, &pAlloc);
 917
 918             if (SUCCEEDED(hr))
 919                 hr = IMemAllocator_Commit(pAlloc);
 920
 921             if (pAlloc)
 922                 IMemAllocator_Release(pAlloc);
 923
 924             if (pMemInputPin)
 925                 IMemInputPin_Release(pMemInputPin);
 926         }
 927     }
 928     LeaveCriticalSection(This->pin.pCritSec);
 929
 930     return hr;
 931 }
 932
 933 HRESULT OutputPin_DeliverDisconnect(OutputPin * This)
 934 {
 935     HRESULT hr;
 936
 937     TRACE("()\n");
 938
 939     EnterCriticalSection(This->pin.pCritSec);
 940     {
 941         if (!This->pin.pConnectedTo)
 942             hr = VFW_E_NOT_CONNECTED;
 943         else
 944         {
 945             IMemInputPin * pMemInputPin = NULL;
 946             IMemAllocator * pAlloc = NULL;
 947             /* FIXME: should we cache this? */
 948             hr = IPin_QueryInterface(This->pin.pConnectedTo, &IID_IMemInputPin, (LPVOID *)&pMemInputPin);
 949
 950             if (SUCCEEDED(hr))
 951                 hr = IMemInputPin_GetAllocator(pMemInputPin, &pAlloc);
 952
 953             if (SUCCEEDED(hr))
 954                 hr = IMemAllocator_Decommit(pAlloc);
 955
 956             if (pAlloc)
 957                 IMemAllocator_Release(pAlloc);
 958
 959             if (pMemInputPin)
 960                 IMemInputPin_Release(pMemInputPin);
 961
 962             if (SUCCEEDED(hr))
 963                 hr = IPin_Disconnect(This->pin.pConnectedTo);
 964         }
 965     }
 966     LeaveCriticalSection(This->pin.pCritSec);
 967
 968     return hr;
 969 }
 970
 971
 972 HRESULT PullPin_Construct(const PIN_INFO * pPinInfo, SAMPLEPROC pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 973 {
 974     PullPin * pPinImpl;
 975
 976     *ppPin = NULL;
 977
 978     if (pPinInfo->dir != PINDIR_INPUT)
 979     {
 980         ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir);
 981         return E_INVALIDARG;
 982     }
 983
 984     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
 985
 986     if (!pPinImpl)
 987         return E_OUTOFMEMORY;
 988
 989     if (SUCCEEDED(PullPin_Init(pPinInfo, pSampleProc, pUserData, pQueryAccept, pCritSec, pPinImpl)))
 990     {
 991         pPinImpl->pin.lpVtbl = &PullPin_Vtbl;
 992
 993         *ppPin = (IPin *)(&pPinImpl->pin.lpVtbl);
 994         return S_OK;
 995     }
 996     return E_FAIL;
 997 }
 998
 999 HRESULT PullPin_Init(const PIN_INFO * pPinInfo, SAMPLEPROC pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, PullPin * pPinImpl)
1000 {
1001     /* Common attributes */
1002     pPinImpl->pin.refCount = 1;
1003     pPinImpl->pin.pConnectedTo = NULL;
1004     pPinImpl->pin.fnQueryAccept = pQueryAccept;
1005     pPinImpl->pin.pUserData = pUserData;
1006     pPinImpl->pin.pCritSec = pCritSec;
1007     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
1008
1009     /* Input pin attributes */
1010     pPinImpl->fnSampleProc = pSampleProc;
1011     pPinImpl->fnPreConnect = NULL;
1012     pPinImpl->pAlloc = NULL;
1013     pPinImpl->pReader = NULL;
1014     pPinImpl->hThread = NULL;
1015     pPinImpl->hEventStateChanged = CreateEventW(NULL, FALSE, TRUE, NULL);
1016
1017     pPinImpl->rtStart = 0;
1018     pPinImpl->rtStop = ((LONGLONG)0x7fffffff << 32) | 0xffffffff;
1019
1020     return S_OK;
1021 }
1022
1023 HRESULT WINAPI PullPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
1024 {
1025     PIN_DIRECTION pindirReceive;
1026     HRESULT hr = S_OK;
1027     ICOM_THIS(PullPin, iface);
1028
1029     TRACE("(%p, %p)\n", pReceivePin, pmt);
1030     dump_AM_MEDIA_TYPE(pmt);
1031
1032     EnterCriticalSection(This->pin.pCritSec);
1033     {
1034         if (This->pin.pConnectedTo)
1035             hr = VFW_E_ALREADY_CONNECTED;
1036
1037         if (SUCCEEDED(hr) && (This->pin.fnQueryAccept(This->pin.pUserData, pmt) != S_OK))
1038             hr = VFW_E_TYPE_NOT_ACCEPTED; /* FIXME: shouldn't we just map common errors onto
1039                                            * VFW_E_TYPE_NOT_ACCEPTED and pass the value on otherwise? */
1040
1041         if (SUCCEEDED(hr))
1042         {
1043             IPin_QueryDirection(pReceivePin, &pindirReceive);
1044
1045             if (pindirReceive != PINDIR_OUTPUT)
1046             {
1047                 ERR("Can't connect from non-output pin\n");
1048                 hr = VFW_E_INVALID_DIRECTION;
1049             }
1050         }
1051
1052         if (SUCCEEDED(hr))
1053         {
1054             hr = IPin_QueryInterface(pReceivePin, &IID_IAsyncReader, (LPVOID *)&This->pReader);
1055         }
1056
1057         if (SUCCEEDED(hr))
1058         {
1059             ALLOCATOR_PROPERTIES props;
1060             props.cBuffers = 3;
1061             props.cbBuffer = 64 * 1024; /* 64k bytes */
1062             props.cbAlign = 1;
1063             props.cbPrefix = 0;
1064             hr = IAsyncReader_RequestAllocator(This->pReader, NULL, &props, &This->pAlloc);
1065         }
1066
1067         if (SUCCEEDED(hr) && This->fnPreConnect)
1068         {
1069             hr = This->fnPreConnect(iface, pReceivePin);
1070         }
1071
1072         if (SUCCEEDED(hr))
1073         {
1074             CopyMediaType(&This->pin.mtCurrent, pmt);
1075             This->pin.pConnectedTo = pReceivePin;
1076             IPin_AddRef(pReceivePin);
1077         }
1078     }
1079     LeaveCriticalSection(This->pin.pCritSec);
1080     return hr;
1081 }
1082
1083 HRESULT WINAPI PullPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
1084 {
1085     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
1086
1087     *ppv = NULL;
1088
1089     if (IsEqualIID(riid, &IID_IUnknown))
1090         *ppv = (LPVOID)iface;
1091     else if (IsEqualIID(riid, &IID_IPin))
1092         *ppv = (LPVOID)iface;
1093
1094     if (*ppv)
1095     {
1096         IUnknown_AddRef((IUnknown *)(*ppv));
1097         return S_OK;
1098     }
1099
1100     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
1101
1102     return E_NOINTERFACE;
1103 }
1104
1105 ULONG WINAPI PullPin_Release(IPin * iface)
1106 {
1107     ICOM_THIS(PullPin, iface);
1108
1109     TRACE("()\n");
1110
1111     if (!InterlockedDecrement(&This->pin.refCount))
1112     {
1113         if (This->hThread)
1114             PullPin_StopProcessing(This);
1115         IMemAllocator_Release(This->pAlloc);
1116         IAsyncReader_Release(This->pReader);
1117         CloseHandle(This->hEventStateChanged);
1118         CoTaskMemFree(This);
1119         return 0;
1120     }
1121     return This->pin.refCount;
1122 }
1123
1124 static DWORD WINAPI PullPin_Thread_Main(LPVOID pv)
1125 {
1126     for (;;)
1127         SleepEx(INFINITE, TRUE);
1128 }
1129
1130 static void CALLBACK PullPin_Thread_Process(ULONG_PTR iface)
1131 {
1132     ICOM_THIS(PullPin, iface);
1133     HRESULT hr;
1134
1135     REFERENCE_TIME rtCurrent;
1136     ALLOCATOR_PROPERTIES allocProps;
1137
1138     SetEvent(This->hEventStateChanged);
1139
1140     hr = IMemAllocator_GetProperties(This->pAlloc, &allocProps);
1141
1142     rtCurrent = MEDIATIME_FROM_BYTES(ALIGNDOWN(BYTES_FROM_MEDIATIME(This->rtStart), allocProps.cbAlign));
1143
1144     while (rtCurrent < This->rtStop)
1145     {
1146         /* FIXME: to improve performance by quite a bit this should be changed
1147          * so that one sample is processed while one sample is fetched. However,
1148          * it is harder to debug so for the moment it will stay as it is */
1149         IMediaSample * pSample = NULL;
1150         REFERENCE_TIME rtSampleStop;
1151         DWORD dwUser;
1152
1153         hr = IMemAllocator_GetBuffer(This->pAlloc, &pSample, NULL, NULL, 0);
1154
1155         if (SUCCEEDED(hr))
1156         {
1157             rtSampleStop = rtCurrent + MEDIATIME_FROM_BYTES(IMediaSample_GetSize(pSample));
1158             if (rtSampleStop > This->rtStop)
1159                 rtSampleStop = MEDIATIME_FROM_BYTES(ALIGNUP(BYTES_FROM_MEDIATIME(This->rtStop), allocProps.cbAlign));
1160             hr = IMediaSample_SetTime(pSample, &rtCurrent, &rtSampleStop);
1161             rtCurrent = rtSampleStop;
1162         }
1163
1164         if (SUCCEEDED(hr))
1165             hr = IAsyncReader_Request(This->pReader, pSample, (ULONG_PTR)0);
1166
1167         if (SUCCEEDED(hr))
1168             hr = IAsyncReader_WaitForNext(This->pReader, 10000, &pSample, &dwUser);
1169
1170         if (SUCCEEDED(hr))
1171             hr = This->fnSampleProc(This->pin.pUserData, pSample);
1172         else
1173             ERR("Processing error: %lx\n", hr);
1174
1175         if (pSample)
1176             IMemAllocator_ReleaseBuffer(This->pAlloc, pSample);
1177     }
1178 }
1179
1180 static void CALLBACK PullPin_Thread_Stop(ULONG_PTR iface)
1181 {
1182     ICOM_THIS(PullPin, iface);
1183
1184     TRACE("()\n");
1185
1186     EnterCriticalSection(This->pin.pCritSec);
1187     {
1188         HRESULT hr;
1189
1190         CloseHandle(This->hThread);
1191         This->hThread = NULL;
1192         if (FAILED(hr = IMemAllocator_Decommit(This->pAlloc)))
1193             ERR("Allocator decommit failed with error %lx. Possible memory leak\n", hr);
1194     }
1195     LeaveCriticalSection(This->pin.pCritSec);
1196
1197     SetEvent(This->hEventStateChanged);
1198
1199     ExitThread(0);
1200 }
1201
1202 HRESULT PullPin_InitProcessing(PullPin * This)
1203 {
1204     HRESULT hr = S_OK;
1205
1206     TRACE("()\n");
1207
1208     assert(!This->hThread);
1209
1210     /* if we are connected */
1211     if (This->pAlloc)
1212     {
1213         EnterCriticalSection(This->pin.pCritSec);
1214         {
1215             DWORD dwThreadId;
1216             assert(!This->hThread);
1217
1218             This->hThread = CreateThread(NULL, 0, PullPin_Thread_Main, NULL, 0, &dwThreadId);
1219             if (!This->hThread)
1220                 hr = HRESULT_FROM_WIN32(GetLastError());
1221
1222             if (SUCCEEDED(hr))
1223                 hr = IMemAllocator_Commit(This->pAlloc);
1224         }
1225         LeaveCriticalSection(This->pin.pCritSec);
1226     }
1227
1228     TRACE(" -- %lx\n", hr);
1229
1230     return hr;
1231 }
1232
1233 HRESULT PullPin_StartProcessing(PullPin * This)
1234 {
1235     /* if we are connected */
1236     if(This->pAlloc)
1237     {
1238         assert(This->hThread);
1239
1240         ResetEvent(This->hEventStateChanged);
1241
1242         if (!QueueUserAPC(PullPin_Thread_Process, This->hThread, (ULONG_PTR)This))
1243             return HRESULT_FROM_WIN32(GetLastError());
1244     }
1245
1246     return S_OK;
1247 }
1248
1249 HRESULT PullPin_PauseProcessing(PullPin * This)
1250 {
1251     /* make the processing function exit its loop */
1252     This->rtStop = 0;
1253
1254     return S_OK;
1255 }
1256
1257 HRESULT PullPin_StopProcessing(PullPin * This)
1258 {
1259     /* if we are connected */
1260     if (This->pAlloc)
1261     {
1262         assert(This->hThread);
1263
1264         ResetEvent(This->hEventStateChanged);
1265
1266         PullPin_PauseProcessing(This);
1267
1268         if (!QueueUserAPC(PullPin_Thread_Stop, This->hThread, (ULONG_PTR)This))
1269             return HRESULT_FROM_WIN32(GetLastError());
1270     }
1271
1272     return S_OK;
1273 }
1274
1275 HRESULT PullPin_WaitForStateChange(PullPin * This, DWORD dwMilliseconds)
1276 {
1277     if (WaitForSingleObject(This->hEventStateChanged, dwMilliseconds) == WAIT_TIMEOUT)
1278         return S_FALSE;
1279     return S_OK;
1280 }
1281
1282 HRESULT PullPin_Seek(PullPin * This, REFERENCE_TIME rtStart, REFERENCE_TIME rtStop)
1283 {
1284     FIXME("(%lx%08lx, %lx%08lx)\n", (LONG)(rtStart >> 32), (LONG)rtStart, (LONG)(rtStop >> 32), (LONG)rtStop);
1285
1286     PullPin_BeginFlush((IPin *)This);
1287     /* FIXME: need critical section? */
1288     This->rtStart = rtStart;
1289     This->rtStop = rtStop;
1290     PullPin_EndFlush((IPin *)This);
1291
1292     return S_OK;
1293 }
1294
1295 HRESULT WINAPI PullPin_EndOfStream(IPin * iface)
1296 {
1297     FIXME("()\n");
1298     return E_NOTIMPL;
1299 }
1300
1301 HRESULT WINAPI PullPin_BeginFlush(IPin * iface)
1302 {
1303     FIXME("()\n");
1304     return E_NOTIMPL;
1305 }
1306
1307 HRESULT WINAPI PullPin_EndFlush(IPin * iface)
1308 {
1309     FIXME("()\n");
1310     return E_NOTIMPL;
1311 }
1312
1313 HRESULT WINAPI PullPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
1314 {
1315     FIXME("()\n");
1316     return E_NOTIMPL;
1317 }
1318
1319 static const IPinVtbl PullPin_Vtbl =
1320 {
1321     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
1322     PullPin_QueryInterface,
1323     IPinImpl_AddRef,
1324     PullPin_Release,
1325     OutputPin_Connect,
1326     PullPin_ReceiveConnection,
1327     IPinImpl_Disconnect,
1328     IPinImpl_ConnectedTo,
1329     IPinImpl_ConnectionMediaType,
1330     IPinImpl_QueryPinInfo,
1331     IPinImpl_QueryDirection,
1332     IPinImpl_QueryId,
1333     IPinImpl_QueryAccept,
1334     IPinImpl_EnumMediaTypes,
1335     IPinImpl_QueryInternalConnections,
1336     PullPin_EndOfStream,
1337     PullPin_BeginFlush,
1338     PullPin_EndFlush,
1339     PullPin_NewSegment
1340 };